{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB2036-1UB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB2036-1UB0","canonicalUrl":"https://aoctrl.com/siemens/3RB2036-1UB0","factsUrl":"https://aoctrl.com/api/mcp/products/3RB2036-1UB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RB2036-1UB0 solid-state overload relay, CLASS 10E, 3-pole, screw-type terminals, 109 mm depth, ATEX certified.","salesMarkdown":"The Siemens 3RB2036-1UB0 is a SIRIUS solid-state overload relay for three-phase motor protection. It mounts directly onto a contactor (fastening method: contactor mounting), so it becomes a single assembly on the DIN rail, saving panel space and wiring. The main circuit accepts solid wire from 0.5 to 4 mm² (single) or 2× (0.5 to 2.5 mm²), and stranded up to 25 mm² — that covers most motor leads up to about 7.5 kW at 400 V. Auxiliary contact ratings are given at multiple voltages: 2 A at 24 V, 4 A at 120 V, 3 A at 230 V — these are the switching limits for the signal contacts feeding the PLC or safety circuit. Surge voltage resistance is 6 kV, and burst immunity meets IEC 61000-4-4 severity level 3: 2 kV on power ports, 1 kV on signal ports. That means it will hold up in a noisy industrial panel without false trips. ## Where you'd use this — ATEX and environment This overload relay carries ATEX approval PTB 06 ATEX 3001 Ex II (2) GD, so it's suitable for use in potentially explosive atmospheres — typically Zone 1 or 2 gas, or Zone 21/22 dust, when paired with an appropriate contactor and enclosure. Shock resistance is 15 g for 11 ms. Clearance: zero mm upwards, forwards, and backwards; 6 mm at the side. Depth is 109 mm, width 55 mm, height 92 mm.","metaTitle":"Siemens 3RB2036-1UB0 SIRIUS solid-state overload relay, CLAS","metaDescription":"Siemens 3RB2036-1UB0 SIRIUS solid-state overload relay, CLASS 10E, 3-pole, ATEX, screw terminals, 109 mm depth. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Overload Relays"],"specifications":{"Depth":"109 mm","Solid":"0.5 ... 4 mm², 2x (0.5 ... 2.5 mm²)","Width":"55 mm","Height":"92 mm","Upwards":"0 mm","at 24 V":"2 A","at 60 V":"0.55 A","Forwards":"0 mm","Per Pole":"0.02 W","Stranded":"2x (max. 25 mm²), 1 ... 35 mm²","at 110 V":"0.3 A","at 120 V":"4 A","at 125 V":"0.3 A","at 220 V":"0.11 A","at 230 V":"3 A","Backwards":"0 mm","Downwards":"0 mm","Trip Class":"CLASS 10E","At The Side":"6 mm","During Storage":"-40 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-40 ... +80 °C","Fastening Method":"Contactor mounting","Shock Resistance":"15g / 11 ms","Mounting Position":"any","Product Brand Name":"SIRIUS","Type Of Protection":"PTB 06 ATEX 3001 Ex II (2) GD","Product Designation":"solid-state overload relay","For Main Current Circuit":"screw-type terminals","Substance Prohibitance (Date)":"07/01/2006","at AWG cables for main contacts":"2 x (max. 4), 1 x (18 ... 2)","For Auxiliary And Control Circuit":"screw-type terminals","Relative Humidity During Operation":"100 %","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (20 ... 14)","due to burst according to IEC 61000-4-4":"2 kV (power ports), 1 kV (signal ports) corresponds to degree of severity 3","reference code according to IEC 81346-2":"F","Finely Stranded With Core End Processing":"0.5 ... 2.5 mm², 2x (0.5 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"3","number of CO contacts for auxiliary contacts":"0","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","Size Of Contactor Can Be Combined Company-Specific":"S2","electrostatic discharge according to IEC 61000-4-2":"6 kV contact discharge / 8 kV air discharge","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 6 A","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Product Component Removable Terminal For Auxiliary And Control Circuit":"Yes","power loss [W] for rated value of the current at AC in hot operating state":"0.05 W","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"12.5 ... 50 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=292268&mlfb=3RB2036-1UB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RB2036-1UB0/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation does this part carry?","answer":"The 3RB2036-1UB0 carries ATEX approval PTB 06 ATEX 3001 Ex II (2) GD. It also has a substance prohibitance date of 07/01/2006, which aligns with RoHS compliance. The reference code per IEC 81346-2 is F."},{"question":"What are the main circuit terminal wire ranges?","answer":"Screw-type terminals accept solid wire 0.5 to 4 mm² (single) or 2× (0.5 to 2.5 mm²), and stranded wire 1 to 35 mm² (single) or 2× up to 25 mm². For AWG: main contacts accept 2× max 4 AWG or 1× 18 to 2 AWG."},{"question":"What is the depth of the 3RB2036-1UB0?","answer":"The depth is 109 mm. Width is 55 mm, height is 92 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB2036-1UB0","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3RB2036-1UB0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}